Q1
PHYSICS
Unit 7: Properties of Solids and Liquids
A wire of length L, area of cross section A is hanging from a fixed support. The length of the wire changes to L1 when mass M is suspended from its free end. The expression for Young’s modulus is :
↻ Repeated question — also appeared in
2020 (7 sets)
- A. Mg(L1-L)/AL
- B. MgL1/AL
- C. MgL/A(L1-L)
- D. MgL/AL1
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Q2
PHYSICS
Unit 9: Kinetic Theory of Gases
A cylinder contains hydrogen gas at pressure of 249 kPa and temperature 27°C. Its density is : (R = 8.3 J mol–1 K–1)
↻ Repeated question — also appeared in
2020 (7 sets)
- A. 0.2 kg/m3
- B. 0.1 kg/m3
- C. 0.02 kg/m3
- D. 0.5 kg/m3
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Q3
PHYSICS
Unit 15: Electromagnetic Waves
Light with an average flux of 20 W/cm2 falls on a non-reflecting surface at normal incidence having surface area 20 cm2. The energy received by the surface during time span of 1 minute is :
↻ Repeated question — also appeared in
2020 (4 sets)
- A. 12 × 10^3 J
- B. 24 × 10^3 J
- C. 48 × 10^3 J
- D. 10 × 10^3 J
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Q4
PHYSICS
Unit 3: Laws of Motion
Two bodies of mass 4 kg and 6 kg are tied to the ends of a massless string. The string passes over a pulley which is frictionless. The acceleration of the system in terms of acceleration due to gravity (g) is :
↻ Repeated question — also appeared in
2020 (7 sets)
- A. g/2
- B. g/5
- C. g/10
- D. g
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Q5
PHYSICS
Unit 9: Kinetic Theory of Gases
The mean free path for a gas, with molecular diameter d and number density n can be expressed as :
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 1 / (√2 * n * π * d^2)
- B. 1 / (2 * n^2 * π * d^2)
- C. 1 / (√2 * n^2 * π * d^2)
- D. 1 / (n * π * d^2)
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Q6
PHYSICS
Unit 2: Kinematics
A ball is thrown vertically downward with a velocity of 20 m/s from the top of a tower. It hits the ground after some time with a velocity of 80 m/s. The height of the tower is : (g = 10 m/s2)
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2020 (8 sets)
- A. 340 m
- B. 320 m
- C. 300 m
- D. 360 m
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Q7
PHYSICS
Unit 12: Current Electricity
The color code of a resistance is given below. The values of resistance and tolerance, respectively, are:
↻ Repeated question — also appeared in
2020 (1 set)
- A. 47 kΩ, 10%
- B. 4.7 kΩ, 5%
- C. 470 Ω, 5%
- D. 470 kΩ, 5%
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Q8
PHYSICS
Unit 18: Atoms and Nuclei
When a uranium isotope 235/92 U is bombarded with a neutron, it generates 89/36 Kr, three neutrons and :
↻ Repeated question — also appeared in
2020 (7 sets)
- A. 91/40 Zr
- B. 101/36 Kr
- C. 103/36 Kr
- D. 144/56 Ba
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Q9
PHYSICS
Unit 11: Electrostatics
A spherical conductor of radius 10 cm has a charge of 3.2 × 10–7 C distributed uniformly. What is the magnitude of electric field at a point 15 cm from the centre of the sphere?
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 1.28 × 10^5 N/C
- B. 1.28 × 10^6 N/C
- C. 1.28 × 10^7 N/C
- D. 1.28 × 10^4 N/C
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Q10
PHYSICS
Unit 16: Optics
A ray is incident at an angle of incidence i on one surface of a small angle prism (with angle of prism A) and emerges normally from the opposite surface. If the refractive index of the material of the prism is μ, then the angle of incidence is nearly equal to :
↻ Repeated question — also appeared in
2020 (9 sets)
- A. 2A/μ
- B. μA
- C. A/2μ
- D. A/2μ
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Q10
PHYSICS
Unit 16: Optics
A ray is incident at an angle of incidence i on one surface of a small angle prism (with angle of prism A) and emerges normally from the opposite surface. If the refractive index of the material of the prism is μ, then the angle of incidence is nearly equal to :
↻ Repeated question — also appeared in
2020 (9 sets)
- A. 2A/μ
- B. μA
- C. A/2μ
- D. A/2μ
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Q11
PHYSICS
Unit 8: Thermodynamics
Two cylinders A and B of equal capacity are connected to each other via a stop cock. A contains an ideal gas at standard temperature and pressure. B is completely evacuated. The entire system is thermally insulated. The stop cock is suddenly opened. The process is :
↻ Repeated question — also appeared in
2020 (9 sets)
- A. adiabatic
- B. isochoric
- C. isobaric
- D. isothermal
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Q11
PHYSICS
Unit 8: Thermodynamics
Two cylinders A and B of equal capacity are connected to each other via a stop cock. A contains an ideal gas at standard temperature and pressure. B is completely evacuated. The entire system is thermally insulated. The stop cock is suddenly opened. The process is :
↻ Repeated question — also appeared in
2020 (9 sets)
- A. adiabatic
- B. isochoric
- C. isobaric
- D. isothermal
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Q12
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
An iron rod of susceptibility 599 is subjected to a magnetising field of 1200 A m–1. The permeability of the material of the rod is : (μ0 = 4π × 10–7 T m A–1)
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 8.0 × 10–5 T m A–1
- B. 2.4π × 10–5 T m A–1
- C. 2.4π × 10–7 T m A–1
- D. 2.4π × 10–4 T m A–1
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Q12
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
An iron rod of susceptibility 599 is subjected to a magnetising field of 1200 A m⁻¹. The permeability of the material of the rod is : (μ₀ = 4π × 10⁻⁷ T m A⁻¹)
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 8.0 × 10⁻⁵ T m A⁻¹
- B. 2.4π × 10⁻⁵ T m A⁻¹
- C. 2.4π × 10⁻⁷ T m A⁻¹
- D. 2.4π × 10⁻⁴ T m A⁻¹
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Q13
PHYSICS
Unit 18: Atoms and Nuclei
The energy equivalent of 0.5 g of a substance is :
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2020 (4 sets)
- A. 4.5 × 10¹³ J
- B. 1.5 × 10¹³ J
- C. 0.5 × 10¹³ J
- D. 4.5 × 10¹⁶ J
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Q14
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
A 40 μF capacitor is connected to a 200 V, 50 Hz ac supply. The rms value of the current in the circuit is, nearly :
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2020 (4 sets)
- A. 2.05 A
- B. 2.5 A
- C. 25.1 A
- D. 1.7 A
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Q15
PHYSICS
Unit 15: Electromagnetic Waves
The ratio of contributions made by the electric field and magnetic field components to the intensity of an electromagnetic wave is :
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2020 (8 sets)
- A. 1 : 1
- B. 1 : c
- C. 1 : c²
- D. c : 1
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Q16
PHYSICS
Unit 5: Rotational Motion
Two particles of mass 5 kg and 10 kg respectively are attached to the two ends of a rigid rod of length 1 m with negligible mass. The centre of mass of the system from the 5 kg particle is nearly at a distance of :
↻ Repeated question — also appeared in
2020 (7 sets)
- A. 50 cm
- B. 67 cm
- C. 80 cm
- D. 33 cm
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Q17
PHYSICS
Unit 12: Current Electricity
A resistance wire connected in the left gap of a metre bridge balances a 10 Ω resistance in the right gap at a point which divides the bridge wire in the ratio 3 : 2. If the length of the resistance wire is 1.5 m, then the length of 1 Ω of the resistance wire is :
↻ Repeated question — also appeared in
2020 (6 sets)
- A. 1.0 × 10⁻¹ m
- B. 1.5 × 10⁻¹ m
- C. 1.5 × 10⁻² m
- D. 1.0 × 10⁻² m
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Q18
PHYSICS
Unit 16: Optics
In Young’s double slit experiment, if the separation between coherent sources is halved and the distance of the screen from the coherent sources is doubled, then the fringe width becomes :
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2020 (8 sets)
- A. half
- B. four times
- C. one-fourth
- D. double
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Q19
PHYSICS
Unit 12: Current Electricity
A charged particle having drift velocity of 7.5 × 10⁻⁴ m s⁻¹ in an electric field of 3 × 10⁻¹⁰ Vm⁻¹, has a mobility in m² V⁻¹ s⁻¹ of :
↻ Repeated question — also appeared in
2020 (4 sets)
- A. 2.5 × 10⁶
- B. 2.5 × 10⁻⁶
- C. 2.25 × 10⁻¹⁵
- D. 2.25 × 10¹⁵
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Q20
PHYSICS
Unit 7: Properties of Solids and Liquids
Dimensions of stress are :
- A. [ML²T⁻²]
- B. [ML⁰T⁻²]
- C. [ML⁻¹T⁻²]
- D. [MLT⁻²]
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Q21
PHYSICS
Unit 18: Atoms and Nuclei
For which one of the following, Bohr model is not valid ?
↻ Repeated question — also appeared in
2020 (6 sets)
- A. Singly ionised helium atom (He⁺)
- B. Deuteron atom
- C. Singly ionised neon atom (Ne⁺)
- D. Hydrogen atom
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Q22
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
A series LCR circuit is connected to an ac voltage source. When L is removed from the circuit, the phase difference between current and voltage is π/3. If instead C is removed from the circuit, the phase difference is again π/3 between current and voltage. The power factor of the circuit is :
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 0.5
- B. 1.0
- C. -1.0
- D. zero
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Q23
PHYSICS
Unit 7: Properties of Solids and Liquids
A capillary tube of radius r is immersed in water and water rises in it to a height h. The mass of the water in the capillary is 5 g. Another capillary tube of radius 2r is immersed in water. The mass of water that will rise in this tube is :
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 5.0 g
- B. 10.0 g
- C. 20.0 g
- D. 2.5 g
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Q24
PHYSICS
Unit 16: Optics
Assume that light of wavelength 600 nm is coming from a star. The limit of resolution of telescope whose objective has a diameter of 2 m is :
↻ Repeated question — also appeared in
2020 (7 sets)
- A. 1.83 × 10⁻⁷ rad
- B. 7.32 × 10⁻⁷ rad
- C. 6.00 × 10⁻⁷ rad
- D. 3.66 × 10⁻⁷ rad
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Q25
PHYSICS
Unit 19: Electronic Devices
The solids which have the negative temperature coefficient of resistance are:
↻ Repeated question — also appeared in
2020 (5 sets)
- A. insulators only
- B. semiconductors only
- C. insulators and semiconductors
- D. metals
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Q25
PHYSICS
Unit 12: Current Electricity
The solids which have the negative temperature coefficient of resistance are:
↻ Repeated question — also appeared in
2020 (1 set)
- A. insulators only
- B. semiconductors only
- C. insulators and semiconductors
- D. metals
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Q26
PHYSICS
Unit 11: Electrostatics
The capacitance of a parallel plate capacitor with air as medium is 6 μF. With the introduction of a dielectric medium, the capacitance becomes 30 μF. The permittivity of the medium is : (ε₀ = 8.85 × 10⁻¹² C² N⁻¹ m⁻²)
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 1.77 × 10⁻¹² C² N⁻¹ m⁻²
- B. 0.44 × 10⁻¹⁰ C² N⁻¹ m⁻²
- C. 5.00 C² N⁻¹ m⁻²
- D. 0.44 × 10⁻¹³ C² N⁻¹ m⁻²
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Q26
PHYSICS
Unit 11: Electrostatics
The capacitance of a parallel plate capacitor with air as medium is 6 µF. With the introduction of a dielectric medium, the capacitance becomes 30 µF. The permittivity of the medium is: (ε₀ = 8.85 × 10⁻¹² C² N⁻¹ m⁻²)
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 1.77 × 10⁻¹² C² N⁻¹ m⁻²
- B. 0.44 × 10⁻¹⁰ C² N⁻¹ m⁻²
- C. 5.00 C² N⁻¹ m⁻²
- D. 0.44 × 10⁻¹³ C² N⁻¹ m⁻²
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Q27
PHYSICS
Unit 18: Atoms and Nuclei
The energy required to break one bond in DNA is 10⁻²⁰ J. This value in eV is nearly:
↻ Repeated question — also appeared in
2020 (7 sets)
- A. 0.6
- B. 0.06
- C. 0.006
- D. 6
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Q27
PHYSICS
Unit 18: Atoms and Nuclei
The energy required to break one bond in DNA is 10⁻²⁰ J. This value in eV is nearly:
↻ Repeated question — also appeared in
2020 (7 sets)
- A. 0.6
- B. 0.06
- C. 0.006
- D. 6
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Q28
PHYSICS
Unit 19: Electronic Devices
The increase in the width of the depletion region in a p-n junction diode is due to :
↻ Repeated question — also appeared in
2020 (7 sets)
- A. reverse bias only
- B. both forward bias and reverse bias
- C. increase in forward current
- D. forward bias only
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Q28
PHYSICS
Unit 19: Electronic Devices
The increase in the width of the depletion region in a p-n junction diode is due to:
↻ Repeated question — also appeared in
2020 (7 sets)
- A. reverse bias only
- B. both forward bias and reverse bias
- C. increase in forward current
- D. forward bias only
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Q29
PHYSICS
Unit 8: Thermodynamics
The quantities of heat required to raise the temperature of two solid copper spheres of radii r₁ and r₂ (r₁ = 1.5 r₂) through 1 K are in the ratio:
↻ Repeated question — also appeared in
2020 (2 sets)
- A. 9/4
- B. 3/2
- C. 5/3
- D. 27/8
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Q30
PHYSICS
Unit 19: Electronic Devices
For the logic circuit shown, the truth table is:
↻ Repeated question — also appeared in
2020 (5 sets)
- A. A B Y; 0 0 0; 0 1 1; 1 0 1; 1 1 1
- B. A B Y; 0 0 1; 0 1 1; 1 0 1; 1 1 0
- C. A B Y; 0 0 1; 0 1 0; 1 0 0; 1 1 0
- D. A B Y; 0 0 0; 0 1 0; 1 0 0; 1 1 1
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Q31
PHYSICS
Unit 19: Electronic Devices
For transistor action, which of the following statements is correct?
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2020 (7 sets)
- A. Base, emitter and collector regions should have same size.
- B. Both emitter junction as well as the collector junction are forward biased.
- C. The base region must be very thin and lightly doped.
- D. Base, emitter and collector regions should have same doping concentrations.
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Q32
PHYSICS
Unit 10: Oscillations and Waves
In a guitar, two strings A and B made of same material are slightly out of tune and produce beats of frequency 6 Hz. When tension in B is slightly decreased, the beat frequency increases to 7 Hz. If the frequency of A is 530 Hz, the original frequency of B will be:
↻ Repeated question — also appeared in
2020 (7 sets)
- A. 524 Hz
- B. 536 Hz
- C. 537 Hz
- D. 523 Hz
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Q33
PHYSICS
Unit 11: Electrostatics
A short electric dipole has a dipole moment of 16 × 10⁻⁹ C m. The electric potential due to the dipole at a point at a distance of 0.6 m from the centre of the dipole, situated on a line making an angle of 60° with the dipole axis is: (1/(4πε₀) = 9 × 10⁹ N m²/C²)
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 200 V
- B. 400 V
- C. zero
- D. 50 V
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Q34
PHYSICS
Unit 6: Gravitation
A body weighs 72 N on the surface of the earth. What is the gravitational force on it, at a height equal to half the radius of the earth?
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2020 (8 sets)
- A. 32 N
- B. 30 N
- C. 24 N
- D. 48 N
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Q36
PHYSICS
Unit 11: Electrostatics
In a certain region of space with volume 0.2 m³, the electric potential is found to be 5 V throughout. The magnitude of electric field in this region is:
↻ Repeated question — also appeared in
2020 (7 sets)
- A. 0.5 N/C
- B. 1 N/C
- C. 5 N/C
- D. zero
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Q37
PHYSICS
Unit 9: Kinetic Theory of Gases
The average thermal energy for a mono-atomic gas is: (k_B is Boltzmann constant and T, absolute temperature)
↻ Repeated question — also appeared in
2020 (7 sets)
- A. 3/2 k_B T
- B. 5/2 k_B T
- C. 7/2 k_B T
- D. 1/2 k_B T
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Q38
PHYSICS
Unit 5: Rotational Motion
Find the torque about the origin when a force of 3j N acts on a particle whose position vector is 2k m.
↻ Repeated question — also appeared in
2020 (7 sets)
- A. 6j Nm
- B. -6i Nm
- C. 6k Nm
- D. 6i Nm
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Q39
PHYSICS
Unit 17: Dual Nature of Matter and Radiation
Light of frequency 1.5 times the threshold frequency is incident on a photosensitive material. What will be the photoelectric current if the frequency is halved and intensity is doubled?
↻ Repeated question — also appeared in
2020 (7 sets)
- A. four times
- B. one-fourth
- C. zero
- D. doubled
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Q40
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
A long solenoid of 50 cm length having 100 turns carries a current of 2.5 A. The magnetic field at the centre of the solenoid is: (µ₀ = 4π × 10⁻⁷ T m A⁻¹)
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 3.14 × 10⁻⁴ T
- B. 6.28 × 10⁻⁵ T
- C. 3.14 × 10⁻⁵ T
- D. 6.28 × 10⁻⁴ T
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Q41
PHYSICS
Unit 16: Optics
The Brewster's angle i_b for an interface should be
↻ Repeated question — also appeared in
2020 (9 sets)
- A. 30° < i_b < 45°
- B. 45° < i_b < 90°
- C. i_b = 90°
- D. 0° < i_b < 30°
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Q41
PHYSICS
Unit 16: Optics
The Brewster's angle ib for an interface should be
↻ Repeated question — also appeared in
2020 (9 sets)
- A. 30° < ib < 45°
- B. 45° < ib < 90°
- C. ib = 90°
- D. 0° < ib < 30°
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Q42
PHYSICS
Unit 17: Dual Nature of Matter and Radiation
An electron is accelerated from rest through a potential difference of V volt. If the de Broglie wavelength of the electron is 1.227 × 10⁻² nm, the potential difference is:
↻ Repeated question — also appeared in
2020 (9 sets)
- A. 10² V
- B. 10³ V
- C. 10⁴ V
- D. 10 V
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Q42
PHYSICS
Unit 17: Dual Nature of Matter and Radiation
An electron is accelerated from rest through a potential difference of V volt. If the de Broglie wavelength of the electron is 1.227 × 10–2 nm, the potential difference is :
↻ Repeated question — also appeared in
2020 (9 sets)
- A. 10^2 V
- B. 10^3 V
- C. 10^4 V
- D. 10 V
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Q43
PHYSICS
Unit 1: Physics and Measurement
Taking into account of the significant figures, what is the value of 9.99 m - 0.0099 m?
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2020 (8 sets)
- A. 9.98 m
- B. 9.980 m
- C. 9.9 m
- D. 9.9801 m
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Q43
PHYSICS
Unit 1: Physics and Measurement
Taking into account of the significant figures, what is the value of 9.99 m – 0.0099 m?
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 9.98 m
- B. 9.980 m
- C. 9.9 m
- D. 9.9801 m
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Q44
PHYSICS
Unit 1: Physics and Measurement
A screw gauge has least count of 0.01 mm and there are 50 divisions in its circular scale. The pitch of the screw gauge is:
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2020 (2 sets)
- A. 0.25 mm
- B. 0.5 mm
- C. 1.0 mm
- D. 0.01 mm
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Q45
PHYSICS
Unit 10: Oscillations and Waves
The phase difference between displacement and acceleration of a particle in a simple harmonic motion is:
↻ Repeated question — also appeared in
2020 (9 sets)
- A. 3π/2 rad
- B. π/2 rad
- C. zero
- D. π rad
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Q45
PHYSICS
Unit 10: Oscillations and Waves
The phase difference between displacement and acceleration of a particle in a simple harmonic motion is :
↻ Repeated question — also appeared in
2020 (9 sets)
- A. 3π/2 rad
- B. π/2 rad
- C. zero
- D. π rad
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Q46
BIOLOGY
Unit 9: Biotechnology and Its Applications
Match the organism with its use in biotechnology. (a) Bacillus thuringiensis (b) Thermus aquaticus (c) Agrobacterium tumefaciens (d) Salmonella typhimurium
↻ Repeated question — also appeared in
2020 (1 set)
- A. (iv), (iii), (i), (ii)
- B. (iii), (ii), (iv), (i)
- C. (iii), (iv), (i), (ii)
- D. (ii), (iv), (iii), (i)
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Q47
BIOLOGY
Unit 3: Cell Structure and Function
Match the following: (a) Inhibitor of catalytic activity (b) Possess peptide bonds (c) Cell wall material in fungi (d) Secondary metabolite
↻ Repeated question — also appeared in
2020 (1 set)
- A. (iii), (i), (iv), (ii)
- B. (iii), (iv), (i), (ii)
- C. (ii), (iii), (i), (iv)
- D. (ii), (iv), (iii), (i)
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Q48
BIOLOGY
Unit 6: Reproduction
The plant parts which consist of two generations - one within the other: (a) Pollen grains inside the anther (b) Germinated pollen grain with two male gametes (c) Seed inside the fruit (d) Embryo sac inside the ovule
↻ Repeated question — also appeared in
2020 (5 sets)
- A. (a), (b) and (c)
- B. (c) and (d)
- C. (a) and (d)
- D. (a) only
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Q49
BIOLOGY
Unit 4: Plant Physiology
The oxygenation activity of RuBisCo enzyme in photorespiration leads to the formation of
↻ Repeated question — also appeared in
2020 (7 sets)
- A. 1 molecule of 3-C compound
- B. 1 molecule of 6-C compound
- C. 1 molecule of 4-C compound and 1 molecule of 2-C compound
- D. 2 molecules of 3-C compound
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Q50
BIOLOGY
Unit 10: Ecology and Environment
In relation to Gross primary productivity and Net primary productivity of an ecosystem, which one of the following statements is correct?
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2020 (5 sets)
- A. Gross primary productivity is always more than net primary productivity
- B. Gross primary productivity and Net primary productivity are one and same
- C. There is no relationship between Gross primary productivity and Net primary productivity
- D. Gross primary productivity is always less than net primary productivity
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Q51
BIOLOGY
Unit 4: Plant Physiology
The product(s) of reaction catalyzed by nitrogenase in root nodules of leguminous plants is/are
↻ Repeated question — also appeared in
2020 (7 sets)
- A. Nitrate alone
- B. Ammonia and oxygen
- C. Ammonia and hydrogen
- D. Ammonia alone
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Q52
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Identify the incorrect statement.
↻ Repeated question — also appeared in
2020 (6 sets)
- A. Sapwood is involved in conduction of water and minerals from root to leaf
- B. Sapwood is the innermost secondary xylem and is lighter in colour
- C. Due to deposition of tannins, resins, oils etc., heart wood is dark in colour
- D. Heart wood does not conduct water but gives mechanical support
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Q53
BIOLOGY
Unit 9: Biotechnology and Its Applications
Bt cotton variety that was developed by the introduction of toxin gene of Bacillus thuringiensis (Bt) is resistant to
↻ Repeated question — also appeared in
2020 (6 sets)
- A. Fungal diseases
- B. Plant nematodes
- C. Insect predators
- D. Insect pests
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Q54
BIOLOGY
Unit 1: Diversity in Living World
Which of the following pairs is of unicellular algae?
↻ Repeated question — also appeared in
2020 (8 sets)
- A. Gelidium and Gracilaria
- B. Anabaena and Volvox
- C. Chlorella and Spirulina
- D. Laminaria and Sargassum
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Q55
BIOLOGY
Unit 1: Diversity in Living World
Strobili or cones are found in
↻ Repeated question — also appeared in
2020 (9 sets)
- A. Pteris
- B. Marchantia
- C. Equisetum
- D. Salvinia
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Q55
BIOLOGY
Unit 1: Diversity in Living World
Strobili or cones are found in
↻ Repeated question — also appeared in
2020 (9 sets)
- A. Pteris
- B. Marchantia
- C. Equisetum
- D. Salvinia
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Q56
BIOLOGY
Unit 7: Genetics and Evolution
Name the enzyme that facilitates opening of DNA helix during transcription.
↻ Repeated question — also appeared in
2020 (6 sets)
- A. DNA helicase
- B. DNA polymerase
- C. RNA polymerase
- D. DNA ligase
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Q56
BIOLOGY
Unit 3: Cell Structure and Function
Name the enzyme that facilitates opening of DNA helix during transcription.
- A. DNA helicase
- B. DNA polymerase
- C. RNA polymerase
- D. DNA ligase
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Q57
BIOLOGY
Unit 5: Human Physiology
Identify the wrong statement with reference to transport of oxygen
↻ Repeated question — also appeared in
2020 (9 sets)
- A. Partial pressure of CO2 can interfere with O2 binding with haemoglobin
- B. Higher H+ conc. in alveoli favours the formation of oxyhaemoglobin
- C. Low pCO2 in alveoli favours the formation of oxyhaemoglobin
- D. Binding of oxygen with haemoglobin is mainly related to partial pressure of O2
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Q57
BIOLOGY
Unit 5: Human Physiology
Identify the wrong statement with reference to transport of oxygen
↻ Repeated question — also appeared in
2020 (9 sets)
- A. Partial pressure of CO2 can interfere with O2 binding with haemoglobin
- B. Higher H+ conc. in alveoli favours the formation of oxyhaemoglobin
- C. Low pCO2 in alveoli favours the formation of oxyhaemoglobin
- D. Binding of oxygen with haemoglobin is mainly related to partial pressure of O2
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Q58
BIOLOGY
Unit 3: Cell Structure and Function
Identify the correct statement with regard to G1 phase (Gap 1) of interphase.
↻ Repeated question — also appeared in
2020 (8 sets)
- A. Reorganisation of all cell components takes place.
- B. Cell is metabolically active, grows but does not replicate its DNA.
- C. Nuclear Division takes place.
- D. DNA synthesis or replication takes place.
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Q58
BIOLOGY
Unit 3: Cell Structure and Function
Identify the correct statement with regard to G1 phase (Gap 1) of interphase.
↻ Repeated question — also appeared in
2020 (8 sets)
- A. Reorganisation of all cell components takes place.
- B. Cell is metabolically active, grows but does not replicate its DNA.
- C. Nuclear Division takes place.
- D. DNA synthesis or replication takes place.
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Q59
BIOLOGY
Unit 3: Cell Structure and Function
Which of the following statements about inclusion bodies is incorrect?
↻ Repeated question — also appeared in
2020 (8 sets)
- A. These are involved in ingestion of food particles
- B. They lie free in the cytoplasm
- C. These represent reserve material in cytoplasm
- D. They are not bound by any membrane
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Q60
BIOLOGY
Unit 8: Biology and Human Welfare
Match the following diseases with the causative organism and select the correct option.
Column-I Column-II
(a) Typhoid (i) Wuchereria
(b) Pneumonia (ii) Plasmodium
(c) Filariasis (iii) Salmonella
(d) Malaria (iv) Haemophilus
↻ Repeated question — also appeared in
2020 (1 set)
- A. (iii) (iv) (i) (ii)
- B. (ii) (i) (iii) (iv)
- C. (iv) (i) (ii) (iii)
- D. (i) (iii) (ii) (iv)
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Q61
BIOLOGY
Unit 6: Reproduction
Meiotic division of the secondary oocyte is completed
↻ Repeated question — also appeared in
2020 (8 sets)
- A. At the time of copulation
- B. After zygote formation
- C. At the time of fusion of a sperm with an ovum
- D. Prior to ovulation
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Q62
BIOLOGY
Unit 8: Biology and Human Welfare
By which method was a new breed ‘Hisardale’ of sheep formed by using Bikaneri ewes and Marino rams?
↻ Repeated question — also appeared in
2020 (5 sets)
- A. Mutational breeding
- B. Cross breeding
- C. Inbreeding
- D. Out crossing
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Q63
BIOLOGY
Unit 4: Plant Physiology
The number of substrate level phosphorylations in one turn of citric acid cycle is
↻ Repeated question — also appeared in
2020 (4 sets)
- A. One
- B. Two
- C. Three
- D. Zero
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Q64
BIOLOGY
Unit 9: Biotechnology and Its Applications
Choose the correct pair from the following
↻ Repeated question — also appeared in
2020 (5 sets)
- A. Polymerases - Break the DNA into fragments
- B. Nucleases - Separate the two strands of DNA
- C. Exonucleases - Make cuts at specific positions within DNA
- D. Ligases - Join the two DNA molecules
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Q65
BIOLOGY
Unit 8: Biology and Human Welfare
The infectious stage of Plasmodium that enters the human body is
↻ Repeated question — also appeared in
2020 (3 sets)
- A. Sporozoites
- B. Female gametocytes
- C. Male gametocytes
- D. Trophozoites
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Q66
BIOLOGY
Unit 10: Ecology and Environment
Which of the following is not an attribute of a population?
↻ Repeated question — also appeared in
2020 (8 sets)
- A. Natality
- B. Mortality
- C. Species interaction
- D. Sex ratio
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Q67
BIOLOGY
Unit 5: Human Physiology
Select the correct events that occur during inspiration.
(a) Contraction of diaphragm
(b) Contraction of external inter-costal muscles
(c) Pulmonary volume decreases
(d) Intra pulmonary pressure increases
↻ Repeated question — also appeared in
2020 (6 sets)
- A. (c) and (d)
- B. (a), (b) and (d)
- C. only (d)
- D. (a) and (b)
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Q68
BIOLOGY
Unit 10: Ecology and Environment
According to Robert May, the global species diversity is about
↻ Repeated question — also appeared in
2020 (7 sets)
- A. 20 million
- B. 50 million
- C. 7 million
- D. 1.5 million
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Q69
BIOLOGY
Unit 5: Human Physiology
The QRS complex in a standard ECG represents
↻ Repeated question — also appeared in
2020 (7 sets)
- A. Depolarisation of auricles
- B. Depolarisation of ventricles
- C. Repolarisation of ventricles
- D. Repolarisation of auricles
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Q70
BIOLOGY
Unit 9: Biotechnology and Its Applications
Which of the following statements is not correct?
↻ Repeated question — also appeared in
2020 (3 sets)
- A. The proinsulin has an extra peptide called C-peptide.
- B. The functional insulin has A and B chains linked together by hydrogen bonds.
- C. Genetically engineered insulin is produced in E.Coli.
- D. In man insulin is synthesised as a proinsulin
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Q71
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
The transverse section of a plant shows following anatomical features :
(a) Large number of scattered vascular bundles surrounded by bundle sheath
(b) Large conspicuous parenchymatous ground tissue
(c) Vascular bundles conjoint and closed
(d) Phloem parenchyma absent
Identify the category of plant and its part :
↻ Repeated question — also appeared in
2020 (8 sets)
- A. Monocotyledonous root
- B. Dicotyledonous stem
- C. Dicotyledonous root
- D. Monocotyledonous stem
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Q72
BIOLOGY
Unit 5: Human Physiology
Select the correct statement.
↻ Repeated question — also appeared in
2020 (9 sets)
- A. Glucagon is associated with hypoglycemia.
- B. Insulin acts on pancreatic cells and adipocytes.
- C. Insulin is associated with hyperglycemia.
- D. Glucocorticoids stimulate gluconeogenesis.
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Q72
BIOLOGY
Unit 5: Human Physiology
Select the correct statement.
↻ Repeated question — also appeared in
2020 (9 sets)
- A. Glucagon is associated with hypoglycemia.
- B. Insulin acts on pancreatic cells and adipocytes.
- C. Insulin is associated with hyperglycemia.
- D. Glucocorticoids stimulate gluconeogenesis.
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Q73
BIOLOGY
Unit 10: Ecology and Environment
Montreal protocol was signed in 1987 for control of
↻ Repeated question — also appeared in
2020 (9 sets)
- A. Emission of ozone depleting substances
- B. Release of Green House gases
- C. Disposal of e-wastes
- D. Transport of Genetically modified organisms from one country to another
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Q73
BIOLOGY
Unit 10: Ecology and Environment
Montreal protocol was signed in 1987 for control of
↻ Repeated question — also appeared in
2020 (9 sets)
- A. Emission of ozone depleting substances
- B. Release of Green House gases
- C. Disposal of e-wastes
- D. Transport of Genetically modified organisms from one country to another
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Q74
BIOLOGY
Unit 1: Diversity in Living World
Match the following columns and select the correct option.
Column-I Column-II
(a) 6-15 pairs of (i) Trygon
gill slits
(b) Heterocercal (ii) Cyclostomes
caudal fin
(c) Air Bladder (iii) Chondrichthyes
(d) Poison sting (iv) Osteichthyes
↻ Repeated question — also appeared in
2020 (3 sets)
- A. (iii) (iv) (i) (ii)
- B. (iv) (ii) (iii) (i)
- C. (i) (iv) (iii) (ii)
- D. (ii) (iii) (iv) (i)
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Q74
BIOLOGY
Unit 1: Diversity in Living World
Match the following columns and select the correct option.
Column-I: (a) 6-15 pairs of gill slits, (b) Heterocercal caudal fin, (c) Air Bladder, (d) Poison sting
Column-II: (i) Trygon, (ii) Cyclostomes, (iii) Chondrichthyes, (iv) Osteichthyes
↻ Repeated question — also appeared in
2020 (2 sets)
- A. (1) (iii) (iv) (i) (ii)
- B. (2) (iv) (ii) (iii) (i)
- C. (3) (i) (iv) (iii) (ii)
- D. (4) (ii) (iii) (iv) (i)
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Q75
BIOLOGY
Unit 9: Biotechnology and Its Applications
Identify the wrong statement with regard to Restriction Enzymes.
↻ Repeated question — also appeared in
2020 (7 sets)
- A. They cut the strand of DNA at palindromic sites.
- B. They are useful in genetic engineering.
- C. Sticky ends can be joined by using DNA ligases.
- D. Each restriction enzyme functions by inspecting the length of a DNA sequence.
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Q76
BIOLOGY
Unit 3: Cell Structure and Function
Match the following with respect to meiosis: (a) Zygotene, (b) Pachytene, (c) Diplotene, (d) Diakinesis. Match with (i) Terminalization, (ii) Chiasmata, (iii) Crossing over, (iv) Synapsis.
↻ Repeated question — also appeared in
2020 (1 set)
- A. (1) (iv) (iii) (ii) (i)
- B. (2) (i) (ii) (iv) (iii)
- C. (3) (ii) (iv) (iii) (i)
- D. (4) (iii) (iv) (i) (ii)
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Q77
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Cuboidal epithelium with brush border of microvilli is found in
↻ Repeated question — also appeared in
2020 (6 sets)
- A. Ducts of salivary gland
- B. Proximal convoluted tubule of nephron
- C. Eustachian tube
- D. Lining of intestine
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Q78
BIOLOGY
Unit 4: Plant Physiology
Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop.
↻ Repeated question — also appeared in
2020 (8 sets)
- A. Gibberellin
- B. Ethylene
- C. Abscisic acid
- D. Cytokinin
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Q79
BIOLOGY
Unit 9: Biotechnology and Its Applications
Match the following columns and select the correct option. (a) Bt cotton, (b) Adenosine deaminase deficiency, (c) RNAi, (d) PCR
↻ Repeated question — also appeared in
2020 (3 sets)
- A. (1) (iii) (ii) (i) (iv)
- B. (2) (ii) (iii) (iv) (i)
- C. (3) (i) (ii) (iii) (iv)
- D. (4) (iv) (i) (ii) (iii)
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Q80
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
The ovary is half inferior in :
↻ Repeated question — also appeared in
2020 (7 sets)
- A. Mustard
- B. Sunflower
- C. Plum
- D. Brinjal
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Q81
BIOLOGY
Unit 3: Cell Structure and Function
Which one of the following is the most abundant protein in the animals?
↻ Repeated question — also appeared in
2020 (4 sets)
- A. Collagen
- B. Lectin
- C. Insulin
- D. Haemoglobin
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Q82
BIOLOGY
Unit 7: Genetics and Evolution
If the distance between two consecutive base pairs is 0.34 nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is 6.6 × 10^9 bp, then the length of the DNA is approximately
↻ Repeated question — also appeared in
2020 (3 sets)
- A. 2.5 meters
- B. 2.2 meters
- C. 2.7 meters
- D. 2.0 meters
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Q83
BIOLOGY
Unit 7: Genetics and Evolution
The first phase of translation is
↻ Repeated question — also appeared in
2020 (7 sets)
- A. Recognition of DNA molecule
- B. Aminoacylation of tRNA
- C. Recognition of an anti-codon
- D. Binding of mRNA to ribosome
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Q84
BIOLOGY
Unit 5: Human Physiology
Which of the following hormone levels will cause release of ovum (ovulation) from the graffian follicle?
↻ Repeated question — also appeared in
2020 (3 sets)
- A. High concentration of Progesterone
- B. Low concentration of LH
- C. Low concentration of FSH
- D. High concentration of Estrogen
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Q85
BIOLOGY
Unit 7: Genetics and Evolution
Flippers of Penguins and Dolphins are examples of
↻ Repeated question — also appeared in
2020 (8 sets)
- A. Convergent evolution
- B. Industrial melanism
- C. Natural selection
- D. Adaptive radiation
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Q86
BIOLOGY
Unit 7: Genetics and Evolution
Identify the wrong statement with reference to the gene ‘I’ that controls ABO blood groups.
↻ Repeated question — also appeared in
2020 (7 sets)
- A. A person will have only two of the three alleles.
- B. When IA and IB are present together, they express same type of sugar.
- C. Allele ‘i’ does not produce any sugar.
- D. The gene (I) has three alleles.
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Q87
BIOLOGY
Unit 8: Biology and Human Welfare
Select the option including all sexually transmitted diseases.
↻ Repeated question — also appeared in
2020 (2 sets)
- A. Gonorrhoea, Malaria, Genital herpes
- B. AIDS, Malaria, Filaria
- C. Cancer, AIDS, Syphilis
- D. Gonorrhoea, Syphilis, Genital herpes
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Q88
BIOLOGY
Unit 8: Biology and Human Welfare
Match the following columns and select the correct option. (a) Eosinophils, (b) Basophils, (c) Neutrophils, (d) Lymphocytes
- A. (1) (iv) (i) (ii) (iii)
- B. (2) (i) (ii) (iv) (iii)
- C. (3) (ii) (i) (iii) (iv)
- D. (4) (iii) (iv) (ii) (i)
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Q88
BIOLOGY
Unit 5: Human Physiology
Match the following columns and select the correct option.
Column - I: (a) Eosinophils, (b) Basophils, (c) Neutrophils, (d) Lymphocytes
Column - II: (i) Immune response, (ii) Phagocytosis, (iii) Release histaminase, destructive enzymes, (iv) Release granules containing histamine
↻ Repeated question — also appeared in
2020 (4 sets)
- A. (iv) (i) (ii) (iii)
- B. (i) (ii) (iv) (iii)
- C. (ii) (i) (iii) (iv)
- D. (iii) (iv) (ii) (i)
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Q89
BIOLOGY
Unit 10: Ecology and Environment
Match the trophic levels with their correct species examples in grassland ecosystem.
(a) Fourth trophic level (i) Crow
(b) Second trophic level (ii) Vulture
(c) First trophic level (iii) Rabbit
(d) Third trophic level (iv) Grass
↻ Repeated question — also appeared in
2020 (4 sets)
- A. (iii) (ii) (i) (iv)
- B. (iv) (iii) (ii) (i)
- C. (i) (ii) (iii) (iv)
- D. (ii) (iii) (iv) (i)
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Q90
BIOLOGY
Unit 4: Plant Physiology
In light reaction, plastoquinone facilitates the transfer of electrons from
↻ Repeated question — also appeared in
2020 (8 sets)
- A. Cyt b6f complex to PS-I
- B. PS-I to NADP+
- C. PS-I to ATP synthase
- D. PS-II to Cyt b6f complex
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Q91
BIOLOGY
Unit 7: Genetics and Evolution
Embryological support for evolution was disapproved by
↻ Repeated question — also appeared in
2020 (8 sets)
- A. Alfred Wallace
- B. Charles Darwin
- C. Oparin
- D. Karl Ernst von Baer
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Q92
BIOLOGY
Unit 1: Diversity in Living World
Bilaterally symmetrical and acoelomate animals are exemplified by
↻ Repeated question — also appeared in
2020 (8 sets)
- A. Platyhelminthes
- B. Aschelminthes
- C. Annelida
- D. Ctenophora
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Q93
BIOLOGY
Unit 5: Human Physiology
Which of the following would help in prevention of diuresis?
↻ Repeated question — also appeared in
2020 (8 sets)
- A. Reabsorption of Na+ and water from renal tubules due to aldosterone
- B. Atrial natriuretic factor causes vasoconstriction
- C. Decrease in secretion of renin by JG cells
- D. More water reabsorption due to undersecretion of ADH
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Q94
BIOLOGY
Unit 8: Biology and Human Welfare
Match the following columns and select the correct option.
Column-I: (a) Clostridium butylicum, (b) Trichoderma polysporum, (c) Monascus purpureus, (d) Aspergillus niger
Column-II: (i) Cyclosporin-A, (ii) Butyric Acid, (iii) Citric Acid, (iv) Blood cholesterol lowering agent
↻ Repeated question — also appeared in
2020 (4 sets)
- A. (ii) (i) (iv) (iii)
- B. (i) (ii) (iv) (iii)
- C. (iv) (iii) (ii) (i)
- D. (iii) (iv) (ii) (i)
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Q95
BIOLOGY
Unit 3: Cell Structure and Function
Some dividing cells exit the cell cycle and enter vegetative inactive stage. This is called quiescent stage (G0). This process occurs at the end of
↻ Repeated question — also appeared in
2020 (7 sets)
- A. G1 phase
- B. S phase
- C. G2 phase
- D. M phase
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Q96
BIOLOGY
Unit 6: Reproduction
In which of the following techniques, the embryos are transferred to assist those females who cannot conceive?
↻ Repeated question — also appeared in
2020 (8 sets)
- A. GIFT and ZIFT
- B. ICSI and ZIFT
- C. GIFT and ICSI
- D. ZIFT and IUT
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Q97
BIOLOGY
Unit 1: Diversity in Living World
Which of the following statements are true for the phylum-Chordata?
(a) In Urochordata notochord extends from head to tail and it is present throughout their life.
(b) In Vertebrata notochord is present during the embryonic period only.
(c) Central nervous system is dorsal and hollow.
(d) Chordata is divided into 3 subphyla : Hemichordata, Tunicata and Cephalochordata.
↻ Repeated question — also appeared in
2020 (7 sets)
- A. (c) and (a)
- B. (a) and (b)
- C. (b) and (c)
- D. (d) and (c)
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Q98
BIOLOGY
Unit 10: Ecology and Environment
Snow-blindness in Antarctic region is due to
↻ Repeated question — also appeared in
2020 (6 sets)
- A. Inflammation of cornea due to high dose of UV-B radiation
- B. High reflection of light from snow
- C. Damage to retina caused by infra-red rays
- D. Freezing of fluids in the eye by low temperature
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Q99
BIOLOGY
Unit 5: Human Physiology
Match the following columns and select the correct option.
Column-I: (a) Pituitary gland, (b) Thyroid gland, (c) Adrenal gland, (d) Pancreas
Column-II: (i) Grave’s disease, (ii) Diabetes mellitus, (iii) Diabetes insipidus, (iv) Addison’s disease
↻ Repeated question — also appeared in
2020 (2 sets)
- A. (iii) (ii) (i) (iv)
- B. (iii) (i) (iv) (ii)
- C. (ii) (i) (iv) (iii)
- D. (iv) (iii) (i) (ii)
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Q100
BIOLOGY
Unit 3: Cell Structure and Function
Which of the following statements is correct?
↻ Repeated question — also appeared in
2020 (3 sets)
- A. Adenine pairs with thymine through one H-bond
- B. Adenine pairs with thymine through three H-bonds
- C. Adenine does not pair with thymine
- D. Adenine pairs with thymine through two H-bonds
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Q101
BIOLOGY
Unit 4: Plant Physiology
Match the following concerning essential elements and their functions in plants
(a) Iron (i) Photolysis of water
(b) Zinc (ii) Pollen germination
(c) Boron (iii) Required for chlorophyll biosynthesis
(d) Manganese (iv) IAA biosynthesis
↻ Repeated question — also appeared in
2020 (5 sets)
- A. (iv) (iii) (ii) (i)
- B. (iii) (iv) (ii) (i)
- C. (iv) (i) (ii) (iii)
- D. (ii) (i) (iv) (iii)
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Q101
BIOLOGY
Unit 4: Plant Physiology
Match the following concerning essential elements and their functions in plants: (a) Iron, (b) Zinc, (c) Boron, (d) Manganese.
↻ Repeated question — also appeared in
2020 (1 set)
- A. Iron: (iv) IAA biosynthesis; Zinc: (iii) Required for chlorophyll biosynthesis; Boron: (ii) Pollen germination; Manganese: (i) Photolysis of water
- B. Iron: (iii) Required for chlorophyll biosynthesis; Zinc: (iv) IAA biosynthesis; Boron: (ii) Pollen germination; Manganese: (i) Photolysis of water
- C. Iron: (iv) IAA biosynthesis; Zinc: (i) Photolysis of water; Boron: (ii) Pollen germination; Manganese: (iii) Required for chlorophyll biosynthesis
- D. Iron: (ii) Pollen germination; Zinc: (i) Photolysis of water; Boron: (iv) IAA biosynthesis; Manganese: (iii) Required for chlorophyll biosynthesis
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Q102
BIOLOGY
Unit 4: Plant Physiology
Which of the following is not an inhibitory substance governing seed dormancy?
↻ Repeated question — also appeared in
2020 (8 sets)
- A. Abscisic acid
- B. Phenolic acid
- C. Para-ascorbic acid
- D. Gibberellic acid
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Q102
BIOLOGY
Unit 4: Plant Physiology
Which of the following is not an inhibitory substance governing seed dormancy?
↻ Repeated question — also appeared in
2020 (8 sets)
- A. Abscisic acid
- B. Phenolic acid
- C. Para-ascorbic acid
- D. Gibberellic acid
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Q103
BIOLOGY
Unit 7: Genetics and Evolution
From his experiments, S.L. Miller produced amino acids by mixing the following in a closed flask:
↻ Repeated question — also appeared in
2020 (5 sets)
- A. CH3, H2, NH4 and water vapor at 800°C
- B. CH4, H2, NH3 and water vapor at 600°C
- C. CH3, H2, NH3 and water vapor at 600°C
- D. CH4, H2, NH3 and water vapor at 800°C
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Q104
BIOLOGY
Unit 7: Genetics and Evolution
Experimental verification of the chromosomal theory of inheritance was done by:
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- A. Sutton
- B. Boveri
- C. Morgan
- D. Mendel
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Q105
BIOLOGY
Unit 6: Reproduction
The body of the ovule is fused within the funicle at:
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2020 (6 sets)
- A. Micropyle
- B. Nucellus
- C. Chalaza
- D. Hilum
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Q106
BIOLOGY
Unit 5: Human Physiology
Identify the correct statement with reference to human digestive system.
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2020 (7 sets)
- A. Serosa is the innermost layer of the alimentary canal
- B. Ileum is a highly coiled part
- C. Vermiform appendix arises from duodenum
- D. Ileum opens into small intestine
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Q107
BIOLOGY
Unit 3: Cell Structure and Function
Dissolution of the synaptonemal complex occurs during:
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- A. Zygotene
- B. Diplotene
- C. Leptotene
- D. Pachytene
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Q108
BIOLOGY
Unit 1: Diversity in Living World
Floridean starch has structure similar to:
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2020 (8 sets)
- A. Amylopectin and glycogen
- B. Mannitol and algin
- C. Laminarin and cellulose
- D. Starch and cellulose
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Q109
BIOLOGY
Unit 9: Biotechnology and Its Applications
The specific palindromic sequence which is recognized by EcoRI is:
↻ Repeated question — also appeared in
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- A. 5' - GGAACC - 3', 3' - CCTTGG - 5'
- B. 5' - CTTAAG - 3', 3' - GAATTC - 5'
- C. 5' - GGATCC - 3', 3' - CCTAGG - 5'
- D. 5' - GAATTC - 3', 3' - CTTAAG - 5'
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Q111
CHEMISTRY
Unit 19: Biomolecules
Identify the substances having glycosidic bond and peptide bond, respectively in their structure:
↻ Repeated question — also appeared in
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- A. Glycerol, trypsin
- B. Cellulose, lecithin
- C. Inulin, insulin
- D. Chitin, cholesterol
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Q132
CHEMISTRY
Unit 19: Biomolecules
Identify the basic amino acid from the following.
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- A. Glutamic Acid
- B. Lysine
- C. Valine
- D. Tyrosine
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Q132
CHEMISTRY
Unit 19: Biomolecules
Identify the basic amino acid from the following.
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2020 (5 sets)
- A. Glutamic Acid
- B. Lysine
- C. Valine
- D. Tyrosine
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Q136
CHEMISTRY
Unit 11: d- and f-Block Elements
The calculated spin only magnetic moment of Cr2+ ion is
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- A. 4.90 BM
- B. 5.92 BM
- C. 2.84 BM
- D. 3.87 BM
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Q137
CHEMISTRY
Unit 1: Some Basic Concepts in Chemistry
Match the following and identify the correct option.
- A. CO + H2 matches to Synthesis gas
- B. Temporary hardness of water matches to Mg(HCO3)2 + Ca(HCO3)2
- C. B2H6 matches to An electron deficient hydride
- D. H2O2 matches to Non-planar structure
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Q138
CHEMISTRY
Unit 5: Solutions
The mixture which shows positive deviation from Raoult’s law is
↻ Repeated question — also appeared in
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- A. Benzene + Toluene
- B. Acetone + Chloroform
- C. Chloroethane + Bromoethane
- D. Ethanol + Acetone
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Q139
CHEMISTRY
Unit 10: p-Block Elements
Identify the correct statement from the following :
- A. Blister copper has blistered appearance due to evolution of CO2.
- B. Vapour phase refining is carried out for Nickel by Van Arkel method.
- C. Pig iron can be moulded into a variety of shapes.
- D. Wrought iron is impure iron with 4% carbon.
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Q140
CHEMISTRY
Unit 12: Coordination Compounds
Urea reacts with water to form A which will decompose to form B. B when passed through Cu2+ (aq), deep blue colour solution C is formed. What is the formula of C from the following ?
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2020 (3 sets)
- A. [Cu(NH3)4]2+
- B. Cu(OH)2
- C. CuCO3·Cu(OH)2
- D. CuSO4
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Q141
CHEMISTRY
Unit 6: Equilibrium
Hydrolysis of sucrose is given by the following reaction. Sucrose + H2O -> Glucose + Fructose. If the equilibrium constant (Kc) is 2 × 10^13 at 300 K, the value of ΔrG° at the same temperature will be :
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2020 (2 sets)
- A. 8.314 J mol–1 K–1 × 300 K × ln(2 × 10^13)
- B. 8.314 J mol–1 K–1 × 300 K × ln(3 × 10^13)
- C. -8.314 J mol–1 K–1 × 300 K × ln(4 × 10^13)
- D. -8.314 J mol–1 K–1 × 300 K × ln(2 × 10^13)
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Q142
CHEMISTRY
Unit 9: Classification of Elements and Periodicity in Properties
Identify the incorrect match.
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- A. Unnilunium - Mendelevium
- B. Unniltrium - Lawrencium
- C. Unnilhexium - Seaborgium
- D. Unununnium - Darmstadtium
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Q143
CHEMISTRY
Unit 19: Biomolecules
Which of the following is a basic amino acid ?
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- A. Alanine
- B. Tyrosine
- C. Lysine
- D. Serine
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Q144
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
What is the change in oxidation number of carbon in the following reaction? CH4 + 4Cl2 -> CCl4 + 4HCl
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- A. 0 to + 4
- B. - 4 to + 4
- C. 0 to - 4
- D. + 4 to + 4
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Q145
CHEMISTRY
Unit 19: Biomolecules
Sucrose on hydrolysis gives
↻ Repeated question — also appeared in
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- A. α-D-Glucose + β-D-Glucose
- B. α-D-Glucose + β-D-Fructose
- C. α-D-Fructose + β-D-Fructose
- D. β-D-Glucose + α-D-Fructose
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Q146
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
The number of Faradays(F) required to produce 20 g of calcium from molten CaCl2 (Atomic mass of Ca = 40 g mol–1) is
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- A. 2
- B. 3
- C. 4
- D. 1
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Q147
CHEMISTRY
Unit 4: Chemical Thermodynamics
For the reaction, 2Cl(g) -> Cl2(g), the correct option is :
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- A. ΔrH > 0 and ΔrS < 0
- B. ΔrH < 0 and ΔrS > 0
- C. ΔrH < 0 and ΔrS < 0
- D. ΔrH > 0 and ΔrS > 0
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Q148
CHEMISTRY
Unit 11: d- and f-Block Elements
The following metal ion activates many enzymes, participates in the oxidation of glucose to produce ATP and with Na, is responsible for the transmission of nerve signals.
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2020 (1 set)
- A. Copper
- B. Calcium
- C. Potassium
- D. Iron
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Q149
CHEMISTRY
Unit 11: d- and f-Block Elements
Identify the incorrect statement.
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2020 (8 sets)
- A. The transition metals and their compounds are known for their catalytic activity due to their ability to adopt multiple oxidation states and to form complexes.
- B. Interstitial compounds are those that are formed when small atoms like H, C or N are trapped inside the crystal lattices of metals.
- C. The oxidation states of chromium in CrO4^2- and Cr2O7^2- are not the same.
- D. Cr2+ (d4) is a stronger reducing agent than Fe2+ (d6) in water.
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Q149
CHEMISTRY
Unit 11: d- and f-Block Elements
Identify the incorrect statement.
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2020 (8 sets)
- A. The transition metals and their compounds are known for their catalytic activity due to their ability to adopt multiple oxidation states and to form complexes.
- B. Interstitial compounds are those that are formed when small atoms like H, C or N are trapped inside the crystal lattices of metals.
- C. The oxidation states of chromium in CrO4^2- and Cr2O7^2- are not the same.
- D. Cr2+ (d4) is a stronger reducing agent than Fe2+ (d6) in water.
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Q150
CHEMISTRY
Unit 8: Chemical Kinetics
An increase in the concentration of the reactants of a reaction leads to change in
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- A. heat of reaction
- B. threshold energy
- C. collision frequency
- D. activation energy
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Q150
CHEMISTRY
Unit 8: Chemical Kinetics
An increase in the concentration of the reactants of a reaction leads to change in
↻ Repeated question — also appeared in
2020 (8 sets)
- A. heat of reaction
- B. threshold energy
- C. collision frequency
- D. activation energy
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Q151
CHEMISTRY
Unit 17: Organic Compounds Containing Oxygen
Reaction between benzaldehyde and acetophenone in presence of dilute NaOH is known as
↻ Repeated question — also appeared in
2020 (7 sets)
- A. Cannizzaro’s reaction
- B. Cross Cannizzaro’s reaction
- C. Cross Aldol condensation
- D. Aldol condensation
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Q152
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
A tertiary butyl carbocation is more stable than a secondary butyl carbocation because of which of the following?
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2020 (8 sets)
- A. + R effect of – CH3 groups
- B. – R effect of – CH3 groups
- C. Hyperconjugation
- D. – I effect of – CH3 groups
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Q153
CHEMISTRY
Unit 6: Equilibrium
Find out the solubility of Ni(OH)2 in 0.1 M NaOH. Given that the ionic product of Ni(OH)2 is 2 × 10^–15
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 2 × 10^–8 M
- B. 1 × 10^–13 M
- C. 1 × 10^8 M
- D. 2 × 10^–13 M
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Q154
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
Identify a molecule which does not exist.
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2020 (4 sets)
- A. Li2
- B. C2
- C. O2
- D. He2
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Q155
CHEMISTRY
Unit 15: Hydrocarbons
Elimination reaction of 2-Bromo-pentane to form pent-2-ene is (a) β-Elimination reaction, (b) Follows Zaitsev rule, (c) Dehydrohalogenation reaction, (d) Dehydration reaction
↻ Repeated question — also appeared in
2020 (2 sets)
- A. (a), (c), (d)
- B. (b), (c), (d)
- C. (a), (b), (d)
- D. (a), (b), (c)
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Q156
CHEMISTRY
Unit 20: Principles Related to Practical Chemistry
Measuring Zeta potential is useful in determining which property of colloidal solution?
- A. Solubility
- B. Stability of the colloidal particles
- C. Size of the colloidal particles
- D. Viscosity
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Q157
CHEMISTRY
Unit 2: Atomic Structure
The number of protons, neutrons and electrons in 175/71 Lu, respectively, are
↻ Repeated question — also appeared in
2020 (5 sets)
- A. 104, 71 and 71
- B. 71, 71 and 104
- C. 175, 104 and 71
- D. 71, 104 and 71
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Q158
CHEMISTRY
Unit 10: p-Block Elements
Identify the correct statements from the following: (a) CO2(g) is used as refrigerant for ice-cream and frozen food. (b) The structure of C60 contains twelve six carbon rings and twenty five carbon rings. (c) ZSM-5, a type of zeolite, is used to convert alcohols into gasoline. (d) CO is colorless and odourless gas.
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2020 (5 sets)
- A. (a) and (c) only
- B. (b) and (c) only
- C. (c) and (d) only
- D. (a), (b) and (c) only
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Q159
CHEMISTRY
Unit 5: Solutions
An element has a body centered cubic (bcc) structure with a cell edge of 288 pm. The atomic radius is
- A. (sqrt(2)/4) * 288 pm
- B. (4/sqrt(3)) * 288 pm
- C. (4/sqrt(2)) * 288 pm
- D. (sqrt(3)/4) * 288 pm
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Q160
CHEMISTRY
Unit 13: Purification and Characterisation of Organic Compounds
Paper chromatography is an example of
↻ Repeated question — also appeared in
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- A. Partition chromatography
- B. Thin layer chromatography
- C. Column chromatography
- D. Adsorption chromatography
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Q161
CHEMISTRY
Unit 10: p-Block Elements
Which of the following oxoacid of sulphur has – O – O – linkage?
↻ Repeated question — also appeared in
2020 (7 sets)
- A. H2SO4, sulphuric acid
- B. H2S2O8, peroxodisulphuric acid
- C. H2S2O7, pyrosulphuric acid
- D. H2SO3, sulphurous acid
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Q162
CHEMISTRY
Unit 8: Chemical Kinetics
The rate constant for a first order reaction is 4.606 × 10^–3 s^–1. The time required to reduce 2.0 g of the reactant to 0.2 g is:
↻ Repeated question — also appeared in
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- A. 200 s
- B. 500 s
- C. 1000 s
- D. 100 s
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Q163
CHEMISTRY
Unit 15: Hydrocarbons
Which of the following alkane cannot be made in good yield by Wurtz reaction?
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- A. 2,3-Dimethylbutane
- B. n-Heptane
- C. n-Butane
- D. n-Hexane
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Q164
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
Match the following: (a) CO (i) Basic, (b) BaO (ii) Neutral, (c) Al2O3 (iii) Acidic, (d) Cl2O7 (iv) Amphoteric
- A. (ii), (i), (iv), (iii)
- B. (iii), (iv), (i), (ii)
- C. (iv), (iii), (ii), (i)
- D. (i), (ii), (iii), (iv)
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Q164
CHEMISTRY
Unit 9: Classification of Elements and Periodicity in Properties
Match the following :
Oxide Nature
(a) CO (i) Basic
(b) BaO (ii) Neutral
(c) Al2O3 (iii) Acidic
(d) Cl2O7 (iv) Amphoteric
Which of the following is correct option?
- A. (1) (ii) (i) (iv)(iii)
- B. (2) (iii)(iv) (i)(ii)
- C. (3) (iv)(iii) (ii) (i)
- D. (4) (i) (ii) (iii) (iv)
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Q165
CHEMISTRY
Unit 1: Some Basic Concepts in Chemistry
A mixture of N2 and Ar gases in a cylinder contains 7 g of N2 and 8 g of Ar. If the total pressure of the mixture of the gases in the cylinder is 27 bar, the partial pressure of N2 is:
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2020 (3 sets)
- A. 12 bar
- B. 15 bar
- C. 18 bar
- D. 9 bar
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Q165
CHEMISTRY
Unit 1: Some Basic Concepts in Chemistry
A mixture of N2 and Ar gases in a cylinder contains 7 g of N2 and 8 g of Ar. If the total pressure of the mixture of the gases in the cylinder is 27 bar, the partial pressure of N2 is : [Use atomic masses (in g mol–1) : N = 14, Ar = 40]
↻ Repeated question — also appeared in
2020 (3 sets)
- A. 12 bar
- B. 15 bar
- C. 18 bar
- D. 9 bar
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Q166
CHEMISTRY
Unit 15: Hydrocarbons
An alkene on ozonolysis gives methanal as one of the product. Its structure is
↻ Repeated question — also appeared in
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- A. CH3-CH2-CH=CH2
- B. CH3-CH2-CH=CH2
- C. CH3-CH2-CH2-CH=CH2
- D. CH3-CH=CH-CH3
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Q167
CHEMISTRY
Unit 5: Solutions
The freezing point depression constant (Kf) of benzene is 5.12 K kg mol–1. The freezing point depression for the solution of molality 0.078 m containing a non-electrolyte solute in benzene is (rounded off upto two decimal places):
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 0.80 K
- B. 0.40 K
- C. 0.60 K
- D. 0.20 K
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Q167
CHEMISTRY
Unit 5: Solutions
The freezing point depression constant (Kf) of benzene is 5.12 K kg mol–1. The freezing point depression for the solution of molality 0.078 m containing a non-electrolyte solute in benzene is (rounded off upto two decimal places) :
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 0.80 K
- B. 0.40 K
- C. 0.60 K
- D. 0.20 K
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Q168
CHEMISTRY
Unit 4: Chemical Thermodynamics
The correct option for free expansion of an ideal gas under adiabatic condition is
↻ Repeated question — also appeared in
2020 (7 sets)
- A. q = 0, ΔT < 0 and w > 0
- B. q < 0, ΔT = 0 and w = 0
- C. q > 0, ΔT > 0 and w > 0
- D. q = 0, ΔT = 0 and w = 0
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Q169
CHEMISTRY
Unit 1: Some Basic Concepts in Chemistry
Which one of the followings has maximum number of atoms?
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- A. 1 g of Mg(s) [Atomic mass of Mg = 24]
- B. 1 g of O2(g) [Atomic mass of O = 16]
- C. 1 g of Li(s) [Atomic mass of Li = 7]
- D. 1 g of Ag(s) [Atomic mass of Ag = 108]
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Q171
CHEMISTRY
Unit 12: Coordination Compounds
Which of the following is the correct order of increasing field strength of ligands to form coordination compounds?
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- A. SCN− < F− < CN− < C2O4 2−
- B. F− < SCN− < C2O4 2− < CN−
- C. CN− < C2O4 2− < SCN− < F−
- D. SCN− < F− < C2O4 2− < CN−
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Q172
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
Which of the following is a natural polymer?
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- A. poly (Butadiene-styrene)
- B. polybutadiene
- C. poly (Butadiene-acrylonitrile)
- D. cis-1, 4-polyisoprene
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Q173
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
Which of the following set of molecules will have zero dipole moment?
↻ Repeated question — also appeared in
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- A. Boron trifluoride, hydrogen fluoride, carbon dioxide, 1,3-dichlorobenzene
- B. Nitrogen trifluoride, beryllium difluoride, water, 1,3-dichlorobenzene
- C. Boron trifluoride, beryllium difluoride, carbon dioxide, 1,4-dichlorobenzene
- D. Ammonia, beryllium difluoride, water, 1,4-dichlorobenzene
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Q174
CHEMISTRY
Unit 6: Equilibrium
HCl was passed through a solution of CaCl2, MgCl2 and NaCl. Which of the following compound(s) crystallise(s)?
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- A. Only NaCl
- B. Only MgCl2
- C. NaCl, MgCl2 and CaCl2
- D. Both MgCl2 and CaCl2
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Q176
CHEMISTRY
Unit 17: Organic Compounds Containing Oxygen
Anisole on cleavage with HI gives
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- A. I + CH3OH
- B. OH + C2H5I
- C. I + C2H5OH
- D. Phenol + CH3I
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Q177
CHEMISTRY
Unit 18: Organic Compounds Containing Nitrogen
Which of the following amine will give the carbylamine test?
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- A. NHCH3
- B. N(CH3)2
- C. NHCH2H5
- D. Aniline (Primary amine)
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Q178
CHEMISTRY
Unit 17: Organic Compounds Containing Oxygen
Reaction between acetone and methylmagnesium chloride followed by hydrolysis will give:
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- A. Sec. butyl alcohol
- B. Tert. butyl alcohol
- C. Isobutyl alcohol
- D. Isopropyl alcohol
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Q179
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
On electrolysis of dil. sulphuric acid using Platinum (Pt) electrode, the product obtained at anode will be
↻ Repeated question — also appeared in
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- A. Oxygen gas
- B. H2S gas
- C. SO2 gas
- D. Hydrogen gas
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Q180
CHEMISTRY
Unit 19: Biomolecules
Which of the following is a cationic detergent?
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- A. Sodium stearate
- B. Cetyltrimethyl ammonium bromide
- C. Sodium dodecylbenzene sulphonate
- D. Sodium lauryl sulphate
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